Benefits Cost Sharing With Employees: How It Works

By Alfredo Maradiaga, licensed group benefits advisor · AI+Trust Advisory · Updated 2026-07-28

What cost-sharing actually means

Cost-sharing is the arrangement that decides how the monthly premium for your group benefits plan gets divided between the business and the people on the plan. It is not the same as a deductible or a co-pay — those govern what happens at the pharmacy or dentist. Cost-sharing happens upstream, at the premium level, before anyone makes a claim.

You'll hear three terms. A non-contributory plan is one you pay for entirely — employees contribute nothing toward premiums. A contributory plan splits the premium; the employee's share comes off their paycheque, usually as a payroll deduction. A voluntary benefit is one the employee can opt into and fully fund themselves. Most real-world Alberta plans are a mix: the employer fully funds some lines, splits others, and leaves a few optional.

The reason this matters more than owners expect is that the split isn't only about your budget. It quietly controls three things at once — how much tax your employees pay, how many of them actually enroll, and how stable your renewal looks in a year. Get the split right and all three work in your favour. Get it wrong and you can end up paying more while employees value the plan less.

There's no legally required split for a private-sector Alberta employer. You have real latitude here. The job is to design the split on purpose, not inherit whatever a carrier's default template happens to show.

Common splits — and why employers land where they do

In practice, small Alberta employers tend to cluster around a few patterns rather than picking a random percentage.

• 100% employer-paid on core health, dental and drug. Common because these premiums are generally a non-taxable benefit to employees in Alberta, so every dollar you spend lands as untaxed value in their hands. It's also the simplest to administer — no payroll deductions to track.
• 50/50 split across the board. Popular with owners who want employees to feel invested in the plan and to keep claims behaviour reasonable. The trade-off is that a share coming off every paycheque can suppress enrollment if it isn't explained well.
• Employer pays health and dental, employee pays disability (STD/LTD). This is the split experienced brokers reach for most deliberately — and the reason is tax, covered in the next section.
• Employer funds a base plan, employees buy up. You cover a solid core and let people voluntarily add richer options at their own cost.

Why do owners land where they do? Cash flow is the obvious driver, but the bigger one is competition for staff. In trades, trucking and manufacturing, a fully employer-paid core plan is often what closes a hire. In a small professional office where you're competing on total compensation, a richer shared plan can matter more than the split. The right answer depends on who you're trying to keep, not on a rule of thumb.

The tax rule that should drive your disability split

This is the single most important thing to understand about cost-sharing, and it's where owners most often cost their own employees money without realizing it.

For short-term and long-term disability (STD/LTD), who pays the premium determines whether a future benefit payment is taxable. If the employer pays the disability premium, any benefit the employee eventually collects is taxable income to them. If the employee pays the premium — even through a payroll deduction — the benefit they receive is generally tax-effective.

Think about what that means in the moment it matters. An employee off work on long-term disability is already living on a reduced income. If that monthly payment is taxable, it can shrink meaningfully right when they can least absorb it. The fix costs you nothing: structure the plan so employees pay the disability premium. The dollar amount is small on a paycheque, but it protects the full value of the benefit when a claim happens.

The CRA sets out how employer-paid benefits are treated for payroll and taxable-benefit purposes — the detailed rules for group plans live in the CRA T4130 Employers' Guide — Taxable Benefits. Health, dental and drug premiums you pay are generally a non-taxable benefit to Alberta employees; group life and AD&D premiums over certain thresholds are taxable to them. Because these rules cut different ways for different benefits, the cleanest design is often employer-paid health and dental, employee-paid disability. Confirm the specifics for your plan before you sign.

A worked example: a 12-person Edmonton contractor

Say you run a 12-person mechanical contractor in Edmonton. You want a plan that helps you hold onto your two lead techs and doesn't blow up at renewal. Here's how a cost-share might come together. You choose a Standard plan — health, drug and basic dental plus vision, paramedical, life and AD&D — which runs $150–$250 per employee per month, CAD. You decide to pay that portion in full. Because health, dental and drug premiums are generally non-taxable to your crew, every dollar you spend there lands as untaxed value on the truck, which is exactly what a competing shop down the road may not offer. Then you add disability (STD/LTD) and route that premium to the employees as a payroll deduction. The reason is the tax rule above: if one of your leads is off for months with a back injury, you want their disability cheque arriving tax-effective. The deduction off each paycheque is modest; the protection it buys is not. Finally, you bolt on a Health Spending Account add-on at $25–$75 per employee per month, CAD, fully employer-funded, to soak up the odd expense the base plan won't — the extra pair of safety glasses, the orthotics a paramedical cap won't fully cover. The result is a plan where you carry the core, employees carry disability for their own tax benefit, and the HSA gives flexibility without open-ended premium risk. That's a deliberate cost-share, not a default one.

What makes your share go up or down

Your premium — and therefore your share of it — is not a fixed sticker price. It moves with real inputs, and knowing them lets you steer.

• Plan richness. Moving up the tiers is the biggest lever. Essential (health, drug, basic dental) sits at $90–$150 per employee per month, CAD; Standard at $150–$250 per employee per month, CAD; Comprehensive, which adds disability, EAP and higher maximums, at $250–$400 per employee per month, CAD. Every added benefit and every raised maximum lifts the premium you're splitting.
• Your group's claims experience. Once a group is large enough to be credible, carriers rate your renewal partly on what your team actually claimed. High usage pushes premiums up; a lean claims year can pull them down. Smaller groups lean more on the carrier's pooled experience than their own.
• Demographics. Age and family status of your team move life, disability and health costs. A younger crew generally prices lower than an older one.
• Participation. The more eligible employees enrolled, the healthier the risk pool and the more stable the pricing. Thin enrollment is a red flag to carriers. Your cost-share design interacts with all of these. Shifting a benefit to employee-paid lowers your line directly. Adding an HSA instead of endlessly raising plan maximums can cap your exposure. And keeping participation high — which comes back to how you communicate the plan — protects you at renewal.

The cost-sharing mistakes that cost owners money

Most cost-sharing pain is self-inflicted and avoidable. The recurring ones:

• Paying the disability premium yourself. Covered above, and worth repeating because it's the most common and most expensive slip. You feel generous funding it; your employee pays for it in tax exactly when they're most vulnerable.
• Setting an employee share so high the plan can't launch. Voluntary and contributory plans typically require a minimum participation percentage to come into force. If your split makes the paycheque deduction feel steep and you don't explain the value, healthy employees opt out, participation drops below the threshold, and the plan either won't start or comes back priced worse.
• Never re-visiting the split. Owners set a cost-share on day one and leave it untouched through three renewals while the business grows and the team changes. The split that fit a five-person startup rarely fits an eighteen-person company.
• Treating the split as purely financial. Employees don't experience your plan as a spreadsheet. If they don't understand what they're paying for, they undervalue it, use it poorly, and don't factor it into staying. A good split communicated badly performs like a bad split.
• Ignoring coordination of benefits. When an employee's spouse also has coverage, claims can be coordinated across both plans, which can ease usage on yours. Employees who don't know to coordinate leave money and efficiency on the table.

Questions to ask before you sign

Before you commit to any cost-sharing structure, get straight answers to these. A good broker will have them ready; a plan you're rushed into usually won't.

• Which benefits are employer-paid, which are employee-paid, and why is disability structured the way it is? If nobody can explain the disability tax logic, keep asking.
• What minimum participation does this plan require to launch and stay in force? Know the threshold before you build a split that might miss it.
• How are employee shares deducted, and what's the process when someone joins, changes family status, or leaves? Payroll deduction admin is where small employers get tangled.
• What's taxable to my employees under this design, and what's non-taxable? Confirm health, dental, drug, life and AD&D treatment against your actual plan wording.
• When can we change the cost-share — only at renewal, or mid-term? You want to know your flexibility before you're locked in.
• How does this split hold up if our claims run high next year? Ask the broker to walk you through the renewal mechanics under a rough year.

Get those on the table and you're deciding, not just accepting. If you want a second set of eyes on a split you already have, a plan audit will show you where the tax treatment and participation risk sit — before renewal forces the conversation.